display adaptor vs display adapter

display adaptor and display adapter both are nouns.

Word	Noun	Adjective	Verb	Adverb
display adaptor	Yes	No	No	No
display adapter	Yes	No	No	No

As nouns, display adaptor and display adapter are synonyms defined as:

display adaptor and display adapter: (computer science) an electronic device that converts information in memory to video output to a display

display adaptor (noun)	display adapter (noun)
(computer science) an electronic device that converts information in memory to video output to a display	(computer science) an electronic device that converts information in memory to video output to a display